TOP N grouped Bar Chart

[Fabio]

Hi, I would like to do a "Top 4" ordered Bar Chart but I cannot sort the grouped value results and include only the best 4 values

(I do not sum values but I just count the items in each group)

see the Dojo Code

 

 

[Alex Hajigeorgieva]

Hi Fabrizio,

To achieve the desired functionality, get the data in the desired format beforehand. Such functionality is not built-in; the Kendo UI Data Source only uses what is available in its data() collection:

http://docs.telerik.com/kendo-ui/api/javascript/data/datasource#methods-data 

Below are some suggested steps:

- Use the fetch() Kendo UI Data Source method and map the current view in a callback function:

http://docs.telerik.com/kendo-ui/api/javascript/data/datasource#methods-view

- To be able to sort the Kendo UI Data Source by the length of the groups, save the length in a property. ("GroupSize" in our case).

- Assign the colour to another new property otherwise, only the first colour will be used.

With the above steps complete, the data array can be used to achieve the requirement.

- Sort by GroupSize
- Apply pageSize : 4

http://docs.telerik.com/kendo-ui/api/javascript/data/datasource#configuration-pageSize

For your convenience, I am including a Dojo sample completing the above. It is available at:

http://dojo.telerik.com/UrAME

Regards,
Alex
Telerik by Progress